KR970007767A - Automatic screen brightness adjustment circuit - Google Patents

Automatic screen brightness adjustment circuit Download PDF

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Publication number
KR970007767A
KR970007767A KR1019950023305A KR19950023305A KR970007767A KR 970007767 A KR970007767 A KR 970007767A KR 1019950023305 A KR1019950023305 A KR 1019950023305A KR 19950023305 A KR19950023305 A KR 19950023305A KR 970007767 A KR970007767 A KR 970007767A
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KR
South Korea
Prior art keywords
horizontal
screen
vertical
vertical size
voltage
Prior art date
Application number
KR1019950023305A
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Korean (ko)
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KR0144590B1 (en
Inventor
권기준
Original Assignee
구자홍
Lg 전자 주식회사
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Application filed by 구자홍, Lg 전자 주식회사 filed Critical 구자홍
Priority to KR1019950023305A priority Critical patent/KR0144590B1/en
Publication of KR970007767A publication Critical patent/KR970007767A/en
Application granted granted Critical
Publication of KR0144590B1 publication Critical patent/KR0144590B1/en

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G1/00—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data
    • G09G1/06—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data using single beam tubes, e.g. three-dimensional or perspective representation, rotation or translation of display pattern, hidden lines, shadows
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Television Receiver Circuits (AREA)
  • Details Of Television Scanning (AREA)

Abstract

본 발명은 모니터의 영상부에 관한 것으로서. 종래에는 수평 및 수직 출력회로의 화면사이즈가 커지면 화변 밝기가 어두워지고, 화면 사이즈를 적게하면 상대적으로 밝아지기 때문에, 수평 및 수직 사이즈의 변화를 캐스 캐이드증폭부에 구성된 트랜지스터의 베이스(직류 바이어스전압)에 결합하므로서, 영상신호의 변화폭이 매우 작아, 화면의 감도가 떨어지고, 상기 수평 및 수직 사이즈의 변화를 수평 및 수직 편향코일에서 인식하므로서, 완전한 직류전압을 얻기 힘들고, 상기 화면의 변동에 따라 사용자의 눈이 쉽게 피로하게 되므로서, 이를 보완하기 위해 별도의 화면 밝기 조정 볼륨을 수동으로조작해야 하는 불편한 문제점이 있었다.The present invention relates to an image portion of a monitor. Conventionally, since the brightness of the frame becomes dark when the screen size of the horizontal and vertical output circuits increases, and the brightness becomes relatively light when the screen size decreases, the base (direct current bias voltage) of the transistor configured in the cascade amplifier is changed. ), The change of the video signal is very small, the sensitivity of the screen is lowered, and the change of the horizontal and vertical size is recognized by the horizontal and vertical deflection coils, so that it is difficult to obtain a full DC voltage, Since the eyes easily tired, there was an uncomfortable problem of manually operating a separate screen brightness adjustment volume to compensate for this.

따라서 본 발명은 상기와 같은 문제점을 해결하기 위해 화면의 수평 및 수직 사이즈 가변부를 구성하고, 상기 수평 및 수직 사이즈 가변부의 직류전압 변화분을 증폭하므로서, 화면의 수평 및 수직 사이즈가 변화할 때, 영상신호 이득(Contrast)과 모니터의 이득 전압을 동시에 제어하여 화면의 밝기(Brightness)를 조정하면, 화면의 수평 및 수직 사이즈변화에 대해 항상 일정한 화면의 밝기가 유지되면서, 회로의 구성 및 제작이 용이하여 원가절감 및 생산성을 향상시킬 수 있는 모니터의 화면 밝기 자동 조정 회로이다.Therefore, in order to solve the above problems, the present invention configures the horizontal and vertical size variable parts of the screen, and amplifies the DC voltage change of the horizontal and vertical size variable parts, thereby changing the image when the horizontal and vertical size of the screen changes. If you adjust the brightness of the screen by controlling the signal gain and the gain voltage of the monitor at the same time, it is easy to configure and manufacture the circuit while maintaining the constant brightness of the screen against the horizontal and vertical size changes of the screen. It is an automatic screen brightness adjustment circuit that can reduce cost and improve productivity.

Description

모니터의 화면 밝기 자동 조정회로Automatic screen brightness adjustment circuit

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제4도는 본 발명 모니터의 화면 밝기 자동 조정 회로도.4 is a circuit diagram for automatically adjusting the screen brightness of the monitor of the present invention.

Claims (1)

모니터 화면의 수평 및 수직 사이즈를 가변시키도록 직류전압(DC)를 출력시키는 수평 및 수직 사이즈 가변부(11)와, 상기 수평 및 수직 사이즈 가변부(11)에서 출력된 수평 및 수직 사이즈 조정신호인 직류전압(DC)에 의해 수평및 수직 사이즈를 조정하는 수평 및 수직 사이즈 조정부(12)(13)와, 상기 수평 및 수직 사이즈 가변부(11)에서 가변되어 출력된 수평 및 수직 사이즈의 직류전압(DC)을 증폭시키느 제1 및 제2증폭부(14)(15)와, 상기 제1 및 제2증폭부(14)(15)에 의해 증폭되어 중첩된 수평 및 수직 사이즈의 직류저압(DC)을 재차 증폭시키는 제3증폭부(16), 상기 제3증폭부(16)에 의해 증폭된 수평 및 수직 사이즈의 직류전압에 따라온/오프 동작하는 트랜지스터(Q11)(Q12)와, 상기 트랜지스터(Q11)의 온/오프동작에 의해 영상신호 이득을 조정하도록 일정전원(VCC2)에 연결되어 저항값이 가변되는 반고정 저향(VR1)과 상기 트랜지스터(Q12)의 온/오프 동작에 의해 모니터의 이득 전압을 조정하여 화면의 백라스터(Back Rstrer)의 밝기(Brightness)를 조정하도록 부전압(-100V)에 연결되어 저항값이 가변되는 반고정 저항(VR2)으로 구성된 것을 특징으로 하는 모니터의 화면 밝기 자동 조정회로.A horizontal and vertical size variable part 11 for outputting a DC voltage DC to vary the horizontal and vertical sizes of the monitor screen, and horizontal and vertical size adjustment signals output from the horizontal and vertical size variable parts 11. Horizontal and vertical size adjusting units 12 and 13 for adjusting the horizontal and vertical sizes by the DC voltage DC, and the horizontal and vertical size DC voltages that are varied and output by the horizontal and vertical size variable units 11. DC and low-voltage DCs of horizontal and vertical sizes amplified by the first and second amplifiers 14 and 15 and the first and second amplifiers 14 and 15 to amplify DC. A third amplifier 16 for amplifying again), transistors Q11 and Q12 operating on / off according to the horizontal and vertical DC voltages amplified by the third amplifier 16 and the transistor ( Connected to the constant power supply VCC2 to adjust the video signal gain by the on / off operation of Q11). The negative voltage to adjust the brightness of the back raster of the screen by adjusting the gain voltage of the monitor by the on / off operation of the semi fixed fixed VR1 and the transistor Q12 in which the resistance value is variable. (100V) is connected to (-100V) the screen brightness automatic adjustment circuit of the monitor, characterized in that consisting of a semi-fixed resistance (VR2) variable. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950023305A 1995-07-31 1995-07-31 The screen brightness automatic control circuit of monitor KR0144590B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950023305A KR0144590B1 (en) 1995-07-31 1995-07-31 The screen brightness automatic control circuit of monitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950023305A KR0144590B1 (en) 1995-07-31 1995-07-31 The screen brightness automatic control circuit of monitor

Publications (2)

Publication Number Publication Date
KR970007767A true KR970007767A (en) 1997-02-21
KR0144590B1 KR0144590B1 (en) 1998-08-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950023305A KR0144590B1 (en) 1995-07-31 1995-07-31 The screen brightness automatic control circuit of monitor

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100466531B1 (en) * 1998-03-27 2005-04-06 삼성전자주식회사 Automatic contrast control device based on IC control method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100721578B1 (en) * 2005-04-29 2007-05-23 삼성에스디아이 주식회사 Direct Current Stabilizing Circuit of Organic Electroluminescent Device and Power Supply using the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100466531B1 (en) * 1998-03-27 2005-04-06 삼성전자주식회사 Automatic contrast control device based on IC control method

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Publication number Publication date
KR0144590B1 (en) 1998-08-17

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